Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a79576e747d4ffe…

MALICIOUS

PDF

66.9 KB Created: 2020-11-18 18:28:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d208bf767208e9ee88466efc1f5662a0 SHA-1: 1bcb09681c7c31971a808888b0a44b736dec55ab SHA-256: 3a79576e747d4ffeb1dc35b26327d8b39b5908b1c092ace8e85121880cfca6a4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. An external URI pointing to 'traffset.ru' was extracted, suggesting a redirection or download attempt. The document body is heavily obfuscated and unreadable, but the presence of the external URI and the malware detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/123?utm_term=the+innate+life+leave+in+conditioner
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f9e197145be1.pdf
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5f89ecffd0233.pdf
    • https://cdn-cms.f-static.net/uploads/4370072/normal_5fa1b346e216f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/voropa/62340709033.pdf
    • https://uploads.strikinglycdn.com/files/ff42c27e-2c87-43a1-a04a-a27a96fcf11d/zososaloteti.pdf
    • https://uploads.strikinglycdn.com/files/77376e7a-40a3-4493-9a1e-8687996b12e4/american_sniper_torrent_download.pdf
    • https://s3.amazonaws.com/kofabube/sajomoxa.pdf
    • https://s3.amazonaws.com/lixuduwonifa/openbve_n_train_download.pdf
    • https://uploads.strikinglycdn.com/files/be9342a6-e7b3-42d0-beae-62f2462df3c5/ferdi_tayfur_tm_filmleri_izle.pdf
    • https://s3.amazonaws.com/mukutud/national_trail_raceway_street_outlaws.pdf
    • https://s3.amazonaws.com/desenaz/42964228011.pdf
    • https://s3.amazonaws.com/tesapibebujep/32781930464.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca3e.bin
2f2e6d466dfecfe3ef406bf03d01b9f7c50df9c95ebefabb13af9258e48fb431		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3E 4940 bytes
font_01_sfnt_off0000db09.bin
d5a42cfce6dd62b34cb566a1bdf4b997988afe4cf9e889fad6e5e6a6abf2687b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB09 10456 bytes

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